Grooving-machine.



H. P. TOWNSEND.

GROOVING MACHINE.

APPLICATION FILED 51111.12, 1907.

Patented Mar. 23, 1909.

,4; I wzmammmm Q Q 99'@ S .w I Av u UNITED sTA'rns PATENT OFFICE.

HARRY P. TOWNSEND, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO THE CORBIN CABINET LOCK COMPANY, OF NEW BRITAIN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

GBOOVING-MAC'HIN E Specification of Letters Patent.

Patented March 28, 1909.

Application filed January 12, 1907. Serial No. 351,979.

new and Improved Grooving- Machine, of

which the fol owing is a specification.

,Liy invention relates more especially to that class of machines used for producing a groove or other cutin a piece of metal; and

. the object of my invention is to provide a machine of this class that shall be extremely rapid and efficient in its operation; and a further object of the invention is to provide such a machine that shall require little attention in its operation; and a further object of the invention is to rovide a machine of this class in which liability to breaking of parts shall be reduced to a minimum. A form of device in the use of which these objects may be attained is il l1 strated in the accompany in drawings, in whichi igere 1 is a view in side elevation of a machine embodying my inventioi'i. Fig. 2 is a view in cross-section through the same on the line ua of Fig. 1, looking toward the right, parts beyond being omitted. Fig. 3 is a ike view on the line b?) but looking toward the left, parts beyond being omitted. Fig. 4 is a like view on the iine c- 0, parts beyond being omitted. Fig. 5 is a view in lengthwise section on the axis of the main shaft showing the construction of the clutch. Fig. 6 is a detail side view, on enlarged scale, of one of the carriages.

In the accompanying drawings the numeral 10 indicates a table supported by legs or standards 11. 'ihese may be of any desired form and construction and of suitable material. A frame of suitable material and of proper form and constr-c ction is $1 p ported by this table, thisframe consisting of a base 12 which incla des side parts extending from end to end of the machine and resting on the table. The frame also includes end' pieces 13, which may extend across the machine from side to side and intermediate siipports 14 disposed at proper intervals between the end pieces. Cross pieces 15 extend between the mtermediate s: pports 14m: thebottom thereof, and a web .16 de ends from these cross pieces and extends tween the side parts of the base 12 from oneend of the machine to a delivery point, to be hereinafter described, formin carrier chambers .11 Arches 18 extend between the intermediate supports 14 at the top thereof, being s -itnbly seeuredljin any desired manner.

An upper rail supporting bar 19 extends between the end pieces 13, beingsecured thereto in any desired manner, and also being secured to the under surface of the arches 18, as by means of bolts passed throtgh the arches into the bar. A lower rail s21 )porting bar 20 is located immediately un erneath the bar 19 and is secured to the end pieces and, to the cross pieces 15, as by means of bolts.

Rails 21 are secured to opposite sides of the bar-19, and rails 22 are similarly secured to opposite sides of the bar 20. The rails secured to the upper bar 19 are located inn rnediately over the rails secured to the bar 20, the facing edges of the railsbeing of angular shape, as lainly shown in Fig. 2 of the drawings. B ade supports 23 are also secured to the up or bar 19, these preferably lying outside of t e rails 21, and secured by the same fastening means as secure the rails in position. Blades 24 are secured to the blade supports 23, the edges of these blades bearing cutting teeth 25 which are properl formed to cut a groove in a piece of metal The lower edges of the upper rails are cut away at what I term the feeding end of the machine, as shown at 28 in Fig. 1 of the drawings, this being for the urpose of allowing a carriage to be placed in position, as hereinafter described.

A feed shaft26 is mounted in the end pieces 13, this shaft bearing a feed screw 27. This feed shaft bears at one end a driving ulley 29 loosely mounted on the shaft. A riction disk 30 is rigidly secured to the shaft against a shoulder 31, this disk having preferably a driving fit. A friction washer 32 of leather or other suitable material is interposed between the side of the pulle 20 and the friction disk, a casing 33 inclosing the friction disk to prevent the entrance of dust or dirt to the friction surfaces. A spring 34 presses with one end against the ,hub of the pulley 29 and with the opposite end against a stop on the shaft, in the res- 'ent instance this stop being formed v a nut 35.

, on the machine, in the form shown brackets" secured to the base 12 and projecting through openings in the table being employed.

At the opposite end of the machine a drum 43 is mounted in a similar manner, and carriers 44 pass around said drums. There are preferably two of these carriers each consisting of a flexible material, the upper portions of which pass through the chambers 17, as shown in Fig. 2 of the drawings.

Each pair of oppositely disposed rails 21 and 22 constitute a track or guide on which the carriages 45 travel and along which they are'guided through the machine. Each carriage has a blankholder'46 projecting from the side part of the carria e in which pro ection the blank recess'47 is 'ormed. A groove 48 extends from each of the recesses '47 tothe upper surface of the blank holder 46, these grooves being of proper width to receive the edges or cutting teeth of the blades 24. Any suitable means for holding the blanks in the holders may be employed. In the forni herein shown a headed blank 49 is operated upon, the head abutting against the end of p the holder, serving to secure the blank in lace. P The lower rails 22 terminate short of the upper rails 21, as lainly shown in Fig. 1 of the drawin an a drop or receiver 50 is located at t 's point ap urtenant to each of the lower rails. Each drop is pivoted as. at

51 and has its inner edge forming a lip of angular shape, as shown at 52, to corre spond with the shape of the edge of the lower rails. A counterbalance 53 is also secured to each-drop, as plainly shown in Fig. 3 of the. drawings. T e'web 16 does not extend underneath the 'drops 50, but a guide 54, located in line with the web and extending upward to a point immediately underneath the feed shaft 26-, is provided. This guide is preferably constructed of wood and is secured in place in any desired manner.

In the operation of the device the caris. es 45 are sup lied each with a blank49,

all the lower e ge of each carriage being placed upon a lower rail 22, the upper edge ls-swung into the recess 28, and the carriage thenmoved along until it engages an upper rail 21. Rack teeth 55 are formed on the inner or facing sides of the carriages, these teeth being shaped to mesh with the feed screw 27. The carriage being moved until the parts thus enga e the rotation of thefeed screw moves t e carriage with the blank into engagement with the cutting edges '25 of the b ades 24. f vWhile I have'shown herein two blades each succeedingtooth of which, toward the This carrier use: of blades-will be employed and the maamass delivery end of the machine, is located a trifle lower than the preceding tooth, as sufficient'for a complete operation, yet in many forms of the machine a greater num- 1 "hine constructed of greater length for the purpose. In such a construction a greater number of intermediate supports 14 are provided, they, however, being duplicates of parts herein shown.

As the carriagles are moved by the feed screw underneat the cutting edges or teeth 25 a proper groove ,is formed in the blank which is carried by the feeding screw beyond a the blades and onto a drop 50. The carriage is freed from engagement with the feed screw at about the time that it is wholl deposited on the drop. Its weight at this moment is suflicient to overcome the weight of the counterpoise 53, and the drop turning on its pivot deposits the carriage onto one o the carriers 44. In this -movement the upper edge of the carriage rests a ainst the gulde 54, so that it is deposited on t e carrier in a redetermined position, that is, w ith the blan holder uppermost. The carriers trayeling in the direction of the arrows shown m Fig. 1 transfers the. carria es from the delivery end to the feeding en of the machine,

at w hich point the operator removes the blank, rep aces ,another blank and inserts the carriage in the machine as hereinbefore described. It will thus be noted that a single operative can easily care for a single machine, supplying the carriages and placing them in position and thus keep the machine running at its full capacity.

reason of-improper work of the blades the operation of the feed screw applies a force on In case a carriage shall become stalled by to the feed shaft in a direction toward the feeding end of the machine. This causes said shaft to move longitudinally in that di-.

rection against the force of the spring 33, carrying with it the friction disk 30, relieving the pressure at this point. The momentum of the wheel 29 will also aid in this longitudinal movement of the shaft, turning it ahead and causing complete se aration of the disk 30 and the pulley 29. "he. pulleyv can thus,

when the machine is stopped by reason of the imperfect o eration, spin around without injury to ot er parts of the device. The release of the frictional engaging means is so' instantaneous that little damage will occur to the cutting blades, as the feed immediagely stops.

y feed of the'blanks a ainst the cutters is insured, the carria es eing free from chatter .or vibration-in t e cuttinghoperation}.1 Thle ecarriert roug carriages are delivered by t openings 56 (shown in dotted lines in Fig. 1) at the end of the machine, where they may be delivered onto a table arranged for the this constructlon a positive and steady ui't-h the feed screw, means for,

purposeior may be taken by the operative tem rary placement of the carriage in the mac ine, means for guiding the carriage,

" and a cutter secure upon said blank.

means on the carria .e for holding a blank, in position to operate 2. A frame, a shaft mounted in theframe and having a feed screwy-means for rotating the shaft, carriages each having a rack to.

mesh-pith the feed screw, means upon oppo-' site sides of the shaft for guidin said carriages, means upon the carriagesfor holding .a blank, and cutters secured in position at -0 posite sides of said shaft to operate upon b anks held in the carriages.

3. A frame, a guide out a'aay at o ne end to permit temporary placement of a carnage,

the carriage fitting said guide and removably connected nith a feed, means for feedin the carria e along the machine, a blank ho der borne by the carriage, and a cutter supported in position to operate upon said blank in the movement of the carriage.

4. A frame, a guide mounted on the frame, a carriage fitting said guide, a blank holder borne by the carriage'means for feedingthe carriage along said guide, a cutter to operate upon the blank in the holder, a drop to re 'ceive the carriage in its movement from underneath the-cutters, and means for operating the drop. to release the carriage from the guide.

5. A frame, a guide mounted on the frame, a carriage fitting said guide, a blank holder borne by the carriage, means for feeding the carriage along the guide, a cutter to operate upon the" blank in the holder, a drop to receive said carriage, and a counterpoise device coacting -v ith the carriage to operate the drop to release the carriage from the guide.

'6. A frame, a guide mounted on the frame, acarriage fitting said guide, a blank holder borne by the carriage, means for feeding the carriage along said'guide, a cutter mounted to operate upon the blank in said holder, 9. pivoted drop arranged to receive the carriage on oneside-of the pivot, and a weight at the opposite side of the ivot co-acting with the carriage to operate t e drop.

i 7. A frame, a guide mounted on the frame, a carriage fitting said guide, a blank holder borne by the carriage, means for feeding the carriage along the guide, means for automatically releasing the carriage from the guide, and a-cutter mounted to operate upon the blank-in the holder.

8. A frame, a guide mounted on the frame,

l a carriageremovably held between members i of said guide, a blank holder borne by the carriage, means for feeding the carriage upon a blank in said holder, and means for releasin the carriage.

9. A rame, a guide mounted on the frame. a carriage fitting said guide, a blank holder borne by the carriage, means for moving the carriage along the guide, a cutter for operating upon a b ank in the holder, a drop to receive. said carriage, and means for automatically releasing the carriage from the guide.

frame, a carriage fitting said guide, a blank holder borne bythe carriage, means for feeding the carriage along the guide, a cutter mounted to operate 11 on a blank in the holder, and a pivoted r0 arranged to receive the carriage. on one si e of its ivot and having a weight at the opposite si e co-actingdwith the carriage to release it from the gui e. Y

11. A frame, a guide borne by the frame,

a carriage fitting said guide, a blank -holder in said carriage, means for feeding the carriage along the guide, a cutter mounted to operate upon a blank in said holder, a drop to receive the carriage, a guide to direct the carriage to a carrier, and means for operating the drop. 12. A frame, a guide mdunted on the frame, a carriage fitting said guide, means for moving the carriage along the guide, a drop having a lip to fit said carriage, and means for operating the drop to release the carriage from its guide.

13. A frame, a guide mounted on the frame, a carriage fitting said guide, means for feeding the carriage along the guide, a pivoted drop having a lip' to fit said carriage and a Weight co-acting with the carriage to release it from its guide.

14. A frame, a guide mounted on the frame and including oppositely disposed 'riage While engagedtherewith, the carriage fitting said guide, means for feeding the calriage along the guide, a receiver to receive the carriage from the guide, a'carrier, and means for delivering the carriage from the receiver tothe carrier.

15. A frame, a guide including oppositely disposed rails, one of which projects beyond the other, a receiver movably located in continuatiozi of the shorter rail and opposite the projecting part of the other rail, means for removing the receiver, a. carriage fitting said rails, and means for moving the carriage along the guides to said receiver. 1

16. A frame, a guide including a top and a bottom rail, the former projecting beyond the latter, a carriage fitting said guides, means for along the guide, a cutter mounted to operate v 10. A frame, a guide mounted in the.

rails arranged to prevent removal of a car- I moving the carriage along the'guides, a rev ceiver located -1I1 extenslon of the shorter rail and underlying the projecting part of the upper rail, and means for operating the receiver to release the carriage from t ra 17.- A frame, a guide mounted on the frame and including an upper and a lower ,hereceived within the groove of the carriage, and 1 means for operating the drop to lower to lower the carriage.

the carriage. I

18. A frame, a guide including oppositely disposed rails, one projecting beyond the other, a carriage having grooves fitting said rails, means for moving the carriage along theguides, a receiver located in extension of the shorter rail and opposite the rojecting part of the longer rail, and means or operating the receiver to move the carriage from engagement with the uide.

19. A frame, a gui' e including oppositely disposed rails, one projecting beyond the other, and one recessed to receive the edge of a carriage, the carriage grooved to receive said rails, means for moving the carriage along the rails, a receiver located in extension of the shorter rail and opposite the projeoting part of the opposite rail, and means for operating the receiver to remove the carriage from engagement with the guide.

20. A frame, a guide including an upper and a lower rail, the former projecting beyondthe latter, a recess in one of said rails to receive the edge of a carriage, the carriage grooved to receive said rails, a drop having a lip located in extension of the lower rail and formed to engage the groove in the carriage, said lip underlying the projecting part of the upper rail, and means for swinging the drop 21. A frame, a guide including an upper and a lower rail, the former projecting beyond the latter, a recess in the upper rail for the reception of the edge of a carriage, the carriage having grooves fitting said rails, means for moving the carriage along the guide, a drop having a lip located in extension of the lower rail and underlying the projecting part of the upper rail, means for operating the drop to lower the carriage, and means for automatically removing the carriage. w

22-. A frame, a guide mounted on the 7 frame and including a lower and an upper rail,

thelatter projecting beyond the former, a carriage having grooves fitting said rails, means 'for moving the carriage along the guide rails,

a counterbalanced drop having a lip located in extension of the lower rail and underlying the projecting part of the upper rail, said lip fitting a groove inthe carriage, and means for automatically removing the carriage.

e upper underlying the projecting part of the upper I rail, a guide located opposite said drop to. conduct a carriage away from the drop, and means underlying the drop to automatically remove the carriage.

24. A frame, a feed shaft mounted in the frame, means foroperating said shaft, guides locatedron opposite sides of the shaft each including oppositely disposed rails one shorter than the other, carriages located on opposite sides of the feed shaft and in engagement therewith and also with said guides, receivers for said carriages, and means for operating the receivers to remove carriages from the guides. v

25. A frame, a shaft having a feed screw, mounted in the frame, means for operating the shaft, guides located one on the opposite side of the shaft from the other and each in cluding rails one projecting beyond the other,

, carriages for each of said guides, each carriage having grooves fitting said rails, a receiver located in extension of the shorterrail of each guide to. receive a carriage therefrom, and

means for operating the receivers to remove carriages from the guides;

26. A frame, a shaft having a feed screw mounted in the frame, means for operating the shaft, guides one located on the opposite side of the shaft from the other and each including a bottom anda top rail, the latter cluding oppositely disposed rails one proj ecting beyond the other,'and one rail being recessed to receive the edgeof arcarriage, carriages mounted on opposite sides of the shaft and in engagement with said feed screwand having grooves fitting said rails, receivers located in extension of the shorter rail of each guide, and means for operating the receiver to remove a carriage from the guides.

28. A frame including a base having chambers extending lengthwise therein, a drum located at each end' of the frame, carriers -mounted on said drum and located within said chambers, guides mounted in the frame, carriages fitting each of the guides, means for moving thecarriages along the guides, means drums mounted at each end of the frame,

carriers mounted on said drums and located within said chambers, uides mounted on the frame, a feed shaft ocated between said guides, carriages fitting said guides and connected with the feed shaft, a receiver upon which the carriages are deposited, and means for operating the receivers to deposit the carriages upon the carriers.

30. A frame having a base with a longitu-' dinally extending web forming chambers, drums mounted at each end of the frame, carriers mounted upon the drums and located within said chambers, a shaft having a feed screw mounted in the frame, guides located one upon the opposite side of the shaft from another, carriages fitting said guides and in engagement with said feed screw, a drop ada ted to receive the carriages from said gui es, and means for operating the drop to deliver the carriages to said carriers.

31. A frame, a carriage having blank holding means, means for feeding the carriage alo said frame, cutters to operate upon a blan on the carria e, means for releasing the carriage from the feeding means, and a carrier to receive the carriage and return it backward along said frame.

32. A frame, a shaft mounted in the frame and connected with a feed screw, the feed screw, means for rotating the shaft, guide rails, carriages located on said rails on opposite sides of the screw each carriage having a mutilated nut engaging the side of the screw, and means for releasing the carriages from the screws.

33. A frame, a shaft mounted in the frame and connected with a feed screw, the feed screw, means for rotating the shaft, guides located upon opposite sides of the shaft and each having 0 positely disposed rails, carria es removab y held between said rails and eac having a mutilated nut engaging the worm upon op osite sides thereof, and means for releasing t 1e carriages from the rails.

34. A frame, a shaft mounted in the frame and connected with a feed screw, the feed screw, means for rotating the shaft, guides located on opposite sides of the shaft and each having upper and lower rails, carriages removably held between said rails and each having a mutilated nut engaging the screw upon opposite sides, and means for releasing the carriages from said rails.

. HARRY P. TOWNSEND.

\Vitnesses:

JOHN D. BLAIR, ALICE B. MUNsoN. 

